Hobart Battery Mate battery charger, model 750H3-18C, serial number 499CS58115, specs number 500186-200, includes Hobart 250C11 auto start/stop controls, DC output per circuit includes battery type LA, single circuit, 18 cells, amps an hour are 601 to 750 in an 8 hour period, 36 volts, maximum of 128 amps, AC input wired 208-240/480/3/60, maximum amps 18.2/15.8/7.9, mild steel construction.